Bull and Chunk aim to prove that their client, a woman on trial for murder, committed the crime due to a lack of behavioral control caused by a brain tumor; Taylor is suspected by the FBI of committing cybercrimes.

When Bull handles the negligent homicide defense of a building owner accused of killing tenants by carbon monoxide poisoning, the case rocks Bull and the TAC team to their core. Also, TAC’s trial defense is made more difficult when the ADA prosecuting the case is Chunk’s ex-boyfriend, Rob Jones, someone very familiar with Bull’s tricks; and Taylor is forced to reevaluate her work-life balance when she gets shocking news about her son.